CN109049405B

CN109049405B - PET plastics 3D printer

Info

Publication number: CN109049405B
Application number: CN201810817999.7A
Authority: CN
Inventors: 王玉芹
Original assignee: Guangxi Wuzhou Guolong Renewable Resources Development Co Ltd
Current assignee: Guangxi Wuzhou Guolong renewable resources development Co., Ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2021-01-12
Anticipated expiration: 2038-07-24
Also published as: CN109049405A

Abstract

The invention belongs to the technical field of 3D printing, and particularly relates to a PET plastic 3D printer; the device comprises a machine body, a workbench, a melting module, a printing head and a flattening module, wherein the workbench is positioned on one side of the machine body, is used as the working position of the printing head and is driven to rotate by a driving motor arranged on the machine body; the melting module is fixed on the other side of the machine body and is used for melting the waste plastic bottles and liquefying the waste plastic bottles into raw materials for printing; the flattening module is fixed on the machine body, is positioned below the melting module and is used for flattening the waste plastic bottles; according to the invention, the plastic pots with concave bottoms, different shapes and high quality can be quickly produced by using the waste plastic bottles, the waste resources are recycled, the environmental pollution of the waste resources is reduced, and the problem that the plastic pots with concave bottoms are difficult to print is solved.

Description

PET plastics 3D printer

Technical Field

The invention belongs to the technical field of 3D printing, and particularly relates to a PET plastic 3D printer.

Background

In daily life, a large amount of waste is generated every day for plastic products, such as waste plastic bottles generated after various drinks are drunk, the plastic bottles are generally produced by adopting PET materials, if the waste plastic bottles cannot be reused, on one hand, the waste of resources is caused, and on the other hand, if the waste plastic bottles cannot be properly treated, the environment pollution is caused. Nowadays, 3D printing technology has been widely used, and people have used waste plastics to print plastic products, such as plastic pots with concave bottoms, in combination with 3D printing technology.

Patent document 1: an environment-friendly 3D printing system, application number: 2016100407924

In above-mentioned patent document 1, combine to accomplish 3D through feeding machine, plastics rubbing crusher, high temperature melt machine and printer and print, but when general 3D printer printed the concave part structure of plastics basin, the raw materials was in unsettled state, was difficult for printing, prints inefficiency, consequently, when carrying out 3D to the various plastics basins of bottom indent and print, printing efficiency was a problem of treating the solution.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides a PET plastic 3D printer, which aims to quickly form various plastic basins with different shapes and concave bottoms by utilizing waste resources. The invention can rapidly produce plastic pots with different shapes and good quality by using the waste plastic bottles, recycles waste resources, reduces the environmental pollution of the waste resources, and solves the problem that the plastic pots with concave bottoms are difficult to print.

The technical scheme adopted by the invention for solving the technical problems is as follows: the PET plastic 3D printer comprises a printer body, a workbench, a melting module, a printing head and a flattening module, wherein the workbench is positioned on one side of the printer body, is in a working position of the printing head and is driven to rotate by a driving motor arranged on the printer body; the melting module is fixed on the other side of the machine body and is used for melting the waste plastic bottles and liquefying the waste plastic bottles into raw materials for printing; the flattening module is fixed on the machine body, is positioned below the melting module and is used for flattening the waste plastic bottles; wherein the content of the first and second substances,

the machine body comprises a support, support legs, a sliding seat, a first screw rod and a first motor, wherein the support is supported on the ground through the support legs; the sliding seat is connected with the support in a sliding mode, and a first support, a second lead screw and a second motor are arranged on the lower end face of the sliding seat; the second screw rod is limited on the sliding seat through the first bracket; the second motor is fixed on the first support and used for driving the second screw rod to rotate; the support is provided with a first screw rod and a first motor, and the first screw rod penetrates through the sliding seat; the first motor is used for driving the first screw rod to drive the sliding seat to slide back and forth on the support; the printing head is positioned on the second screw rod, the printing head horizontally moves back and forth on the sliding seat along with the rotation of the second screw rod, a conveying pipe is arranged between the printing head and the melting module, and the printing head is communicated with the melting module through the conveying pipe. When the printing machine works, the first motor drives the sliding seat to slide up and down at the support to adjust the height of the printing head and the workbench; the second motor drives the second screw rod to rotate and drives the motor to drive the workbench to rotate, so that the printing head can horizontally move relative to the workbench.

The workbench comprises a workbench core, a first cam, a first rotating handle, a first sleeve, a second cam, a second rotating handle, a second sleeve, a third cam, a third rotating handle and an installation barrel, wherein the sleeve is sleeved outside the workbench core, and the inner wall of the first sleeve is matched with the outer wall of the workbench core; the sleeve is sleeved outside the sleeve I, and the inner wall of the sleeve II is matched with the outer wall of the sleeve I; the mounting barrel is sleeved on the outer side of the second sleeve, and the inner wall of the mounting barrel is matched with the outer wall of the second sleeve; the first cam is limited on the installation barrel through the first rotating handle, and the first cam is positioned at the lower end of the table core; the first rotating handle is rotatably connected with the mounting barrel, and the first rotating handle drives the first cam to eccentrically move so that the table core can move up and down at the mounting barrel and is adjustable; the second cam is limited on the mounting barrel through the second rotating handle and is positioned at the lower end of the first sleeve; the second rotating handle is rotatably connected with the mounting barrel, and the second rotating handle drives the second cam to eccentrically move so that the first sleeve can move up and down at the mounting barrel and be adjusted; the cam tee is limited on the mounting barrel through the third rotating handle, and the cam tee is positioned at the lower end of the second sleeve; the third rotating handle is rotatably connected with the mounting barrel, and the third rotating handle drives the cam to eccentrically move so that the second sleeve can move up and down at the mounting barrel and is adjustable. When the bench core is in work, the first cam can be rotated by rotating the first rotating handle, so that the height of the bench core is adjusted, the second rotating handle can be rotated to adjust the height of the first sleeve, and the second rotating handle can be rotated to adjust the height of the second sleeve, so that the end surfaces of the upper ends of the bench core, the first sleeve, the second sleeve and the installation barrel are flush or level or the end surfaces of the bench core, the first sleeve, the second sleeve and the installation barrel are arranged in a ladder shape according to requirements.

The melting module comprises a heating box and a fixing seat, wherein a box cover is arranged on the heating box, the heating box is fixed on the machine body through the fixing seat, a first heating coil is arranged on the heating box, and the first heating coil is used for heating and melting waste plastic bottles in the heating box, so that the melted waste plastic bottles form raw materials for printing. During operation, the heating coil is electrified, so that the heating coil heats the heating box, waste plastic bottles in the heating box are melted into a molten state, the molten waste plastic bottles form raw materials for printing, in the process, pigment can be added into the raw materials and the raw materials are stirred, the color of the raw materials can be changed, and the color of the 3D printed plastic basin is diversified.

The printing head comprises a sealing shell, a discharge pipe and a cooling spray head, wherein the discharge pipe is positioned at the lower end of the sealing shell and extends into the sealing shell; the end part of the conveying pipe is connected with the discharge pipe; the cooling spray head is positioned at the upper end part of the discharge pipe, and sprays water to cool the molten raw materials conveyed by the conveying pipe, so that the surface of the raw materials forms a layer of skin and the raw materials are not adhered to the inner wall of the discharge pipe. When the automatic printing machine works, the conveying pipe conveys raw materials to the discharging pipe, so that the surface of the raw materials forms a layer of surface skin to prevent the raw materials from being adhered to the inner wall of the discharging pipe, the discharging pipe starts to regularly spray the raw materials on the printing table, and the raw materials are overlaid layer by layer to print a 3D plastic basin.

An automatic pressure head is arranged on the printing head and penetrates through the sealing shell; the automatic pressing head comprises a working cam, a pressing rod, a return spring and a pressing head, the return spring is sleeved on the pressing rod, one end of the return spring abuts against the end part of the pressing rod, and the other end of the return spring abuts against the outer wall of the sealing shell; the working cam is positioned at the upper end of the pressure rod, and the working raised head rotates to drive the pressure rod to move up and down at the sealed shell; the compression bar penetrates through the sealing shell, the interior of the lower half section of the compression bar is hollow, and the outer surface of the compression bar is provided with a spiral convex rib; a guide seat is arranged at the joint of the compression bar and the sealing shell, and the compression bar penetrates through the guide seat; the guide seat is provided with a guide hole; a spiral groove is arranged in the guide hole and is matched with the spiral convex rib, so that the pressure rod can rotate while moving up and down in the guide hole; the pressing head is fixed at the lower end of the pressing rod, the interior of the pressing head is hollow, cooling water is filled in the pressing head, the pressing head is communicated with the lower end of the pressing rod, a thorn body is arranged on the lower end face of the pressing head, and a water hole is formed in the lower end face of the pressing head and is positioned at the edge of the thorn body; a water tank is arranged in the sealed shell; the water tank is communicated with the lower half section of the pressure lever through a first pipe. When the discharge pipe stacks raw material layers, the working cam rotates to drive the compression rod to move up and down at the sealing shell and keep rotating, the compression rod drives the pressing head to press the raw materials stacked layer by layer, and the thorn bodies on the pressing head puncture skins formed on the surface layers of the raw materials to enable the upper raw materials and the lower raw materials to be integrated; simultaneously, the cooling water that the water tank was built-in is carried to the press head through the depression bar, make the interior cooling water of press head sufficient, and simultaneously, water in the press head passes through on the water hole flow direction thorn body, make thorn body surface with one deck water, make thorn body surface temperature low, make the thorn body after the raw materials of stabbing the molten condition, the raw materials can not bond on the thorn body, make thorn body surface clean, and simultaneously, the cooling water of storage in the press head can make press head surface temperature low, can avoid the raw materials to bond on the press head, the cleanness on press head surface has been kept.

One end of the conveying pipe is communicated with the melting module, the other end of the conveying pipe is communicated with the printing head, a cooling water pipe and a heating coil II are sleeved outside the conveying pipe, and a rotating feeding wheel is arranged in the conveying pipe; the cooling water pipe is positioned at the joint of the conveying pipe and the melting module and used for cooling the raw materials generated by the melting module, so that the surface of the raw materials forms a layer of skin, and the raw materials are not adhered to the inner wall of the conveying pipe; the feeding wheels are arranged at two ends of the conveying pipe, and rotate to convey the raw materials in the conveying pipe, so that the raw materials flow from the melting module to the printing head; the heating coil II is positioned at the joint of the delivery pipe and the printing head and used for heating and melting the locally cooled raw materials in the delivery pipe so as to keep the raw materials delivered by the delivery pipe in a molten state. When the device works, the conveying pipe receives molten raw materials from the lower end of the heating box, and the cooling water pipe cools the raw materials which just flow from the heating box to the conveying pipe, so that a layer of skin is formed on the outer surface of the raw materials, and the raw materials are not adhered to the inner wall of the conveying pipe; raw materials in the conveyer pipe is under the effect of pivoted feeding wheel, carry the sealed shell department from the heating cabinet with the raw materials, the raw materials enters into the discharging tube from the conveyer pipe, the other end of conveyer pipe is flowed from the one end of conveyer pipe to the raw materials, raw materials temperature in the conveyer pipe necessarily reduces by a wide margin, raw materials in the conveyer pipe will tend to the sclerosis and influence the printing effect of beating printer head, consequently, arrange heating coil two with beating printer head junction at the conveyer pipe, the raw materials heating in the two pairs of conveyer pipes of heating coil, the raw materials that make the conveyer pipe carry out still keeps the molten state, the printing effect of beating printer head has been improved.

The flattening module comprises a base, a sliding plate, a rotary table and a crank, wherein the base is fixed on the machine body through a fastener and comprises a bottom plate and a vertical plate; the bottom plate is vertically and fixedly connected with the vertical plate into a whole, and a dovetail groove and an arc groove are formed in the bottom plate; the arc groove is positioned at the right upper end of the dovetail groove, and the arc surface of the arc groove is provided with threads; the lower end of the sliding plate is matched with the dovetail groove, the sliding plate is connected with the bottom plate in a sliding mode, and a bearing is fixedly arranged on the sliding plate; the rotary table is positioned between the sliding plate and the vertical plate, the arc surface of the rotary table is provided with threads, the rotary table is in threaded fit with the arc groove, the center of the rotary table is provided with a thimble, and the thimble faces the vertical plate; the crank penetrates through the bearing inner ring and is fixedly connected with the bearing inner ring, one end of the crank is welded with the center of the turntable into a whole, and the other end of the crank is a free end which is shaken by hands. During operation, put waste plastic bottle between riser and carousel, rotate the crank and make the carousel rotate, be threaded connection because of carousel and bottom plate, make the carousel constantly be close to the riser when rotating, the carousel removes to drive the sliding plate and slides on the bottom plate, the sliding plate is supporting the carousel through the crank all the time, constantly wave the crank, make the carousel extrusion waste plastic bottle until flattening waste plastic bottle, the reverse rotation crank again loosens waste plastic bottle, take out waste plastic bottle, and put into waste plastic bottle in the heating cabinet.

The invention has the following beneficial effects:

1. according to the PET plastic 3D printer, the printer body, the workbench, the flattening module, the melting module and the printing head are matched with one another to work, the printer body and the workbench can be used for achieving spatial movement of the printing head, the flattening module is used for compressing the waste plastic bottles, the melting module is used for liquefying the waste plastic bottles into printing raw materials, and the printing head is enabled to quickly print plastic basins which are concave at the bottom and have different shapes by using waste resources.

2. According to the PET plastic 3D printer, the melting module, the delivery pipe and the printing head are matched with each other, the delivery pipe cools the surface layer of the raw material when receiving the raw material supplied by the melting module, so that the surface layer of the raw material forms a layer of surface skin, the raw material cannot be adhered to the inner wall of the delivery pipe when passing through the delivery pipe, the delivery pipe is not easy to block, the feeding wheel is arranged in the delivery pipe, the melting module can rapidly deliver the raw material to the printing head, the sufficiency of the raw material is ensured when the printing head prints, and the printing efficiency of the printing head is improved.

3. According to the PET plastic 3D printer, the press head is arranged on the printing head, the press head keeps rotating while moving up and down, the raw materials which are released by the printing head and are stacked layer by layer are pressed through the press head, and the skin formed on the surface layer of the raw materials is punctured by the stabbing body on the press head, so that the upper raw materials and the lower raw materials are fused into a whole, the structure of the produced product is firm, and the improvement of the product quality is facilitated.

4. According to the PET plastic 3D printer, the workbench which can rotate and the upper end surface of which can be manually adjusted is formed by the driving motor, the table core, the first cam, the first rotating handle, the first sleeve, the second cam, the second rotating handle, the second sleeve, the third cam, the third rotating handle and the mounting barrel, so that plastic basins with concave bottoms can be rapidly printed, and the production efficiency of the plastic basins with concave bottoms is improved; meanwhile, the invention can also produce various simple rotary body products similar to plastic basins.

Drawings

FIG. 1 is a schematic structural diagram of a PET plastic 3D printer of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 2;

FIG. 3 is a sectional view taken along line B-B of FIG. 2;

FIG. 4 is a schematic view of the connection of the printhead to the delivery tube of the present invention;

FIG. 5 is a schematic view of the pressing head according to the present invention;

in the figure: the device comprises a machine body 1, a support 11, a sliding seat 12, a screw rod II 121, a screw rod I13, a motor I14, a workbench 2, a driving motor 21, a table core 22, a cam I221, a rotating handle I222, a sleeve I23, a cam II 231, a rotating handle II 232, a sleeve II 24, a cam III 241, a rotating handle III 242, a mounting barrel 25, a melting module 3, a heating box 31, a fixed seat 32, a heating coil I33, a printing head 4, a sealing shell 41, a discharging pipe 42, a cooling spray head 43, an automatic pressure head 44, a working cam 441, a pressure rod 442, a pressing head 443, a thorn body 4431, a guide seat 444, a water tank 445, a flattening module 5, a base 51, a bottom plate 511, a vertical plate 512, a sliding plate 52, a rotating disc 53, a crank 54, a conveying pipe 6, a cooling water pipe 61, a heating coil II 62.

Detailed Description

A PET plastic 3D printer according to an embodiment of the present invention will be described below with reference to fig. 1 to 5.

As shown in fig. 1, a PET plastic 3D printer according to a specific embodiment of the present invention includes a body 1, a table 2, a melting module 3, a printing head 4, and a flattening module 5, where the table 2 is located at one side of the body 1, the table 2 is a working position of the printing head 4, and the table 2 is driven to rotate by a driving motor 21 disposed on the body 1; the melting module 3 is fixed on the other side of the machine body 1, and the melting module 3 is used for melting the waste plastic bottle 7 and liquefying the waste plastic bottle 7 into a raw material 71 for printing; the flattening module 5 is fixed on the machine body 1, the flattening module 5 is positioned below the melting module 3, and the flattening module 5 is used for flattening the waste plastic bottle 7; wherein the content of the first and second substances,

the machine body 1 comprises a support 11, support legs, a sliding seat 12, a first screw rod 13 and a first motor 14, wherein the support 11 is supported on the ground through the support legs; the sliding seat 12 is connected with the support 11 in a sliding manner, and a first support, a second lead screw 121 and a second motor are arranged on the lower end face of the sliding seat 12; the second screw rod 121 is limited on the sliding seat 12 through the first bracket; the second motor is fixed on the first support and used for driving the second screw rod 121 to rotate; a first screw rod 13 and a first motor 14 are arranged on the support 11, and the first screw rod 13 penetrates through the sliding seat 12; the first motor 14 is used for driving the first screw rod 13 to drive the sliding seat 12 to slide back and forth on the support 11; the printing head 4 is positioned on the second screw rod 121, the printing head 4 horizontally moves back and forth on the sliding seat 12 along with the rotation of the second screw rod 121, a delivery pipe 6 is arranged between the printing head 4 and the melting module, and the printing head 4 is communicated with the melting module through the delivery pipe 6. In operation, the first motor 14 drives the sliding seat 12 to slide up and down on the support 11 to adjust the heights of the printing head 4 and the workbench 2; the second motor drives the second screw rod 121 to rotate and the second driving motor 21 drives the workbench 2 to rotate, so that the printing head 4 can horizontally move relative to the workbench 2.

As shown in fig. 1 and 2, the workbench 2 includes a workbench core 22, a first cam 221, a first rotating handle 222, a first sleeve 23, a second cam 231, a second rotating handle 232, a second sleeve 24, a third cam 241, a third rotating handle 242 and a mounting barrel 25, the first sleeve 23 is sleeved outside the workbench core 22, and the inner wall of the first sleeve 23 is matched with the outer wall of the workbench core 22; the second sleeve 24 is sleeved outside the first sleeve 23, and the inner wall of the second sleeve 24 is matched with the outer wall of the first sleeve 23; the mounting barrel 25 is sleeved outside the second sleeve 24, and the inner wall of the mounting barrel 25 is matched with the outer wall of the second sleeve 24; the first cam 221 is limited on the mounting barrel 25 through the first rotating handle 222, and the first cam 221 is positioned at the lower end of the table core 22; the first rotating handle 222 is rotatably connected with the mounting barrel 25, and the first rotating handle 222 drives the first cam 221 to eccentrically move so that the table core 22 can move up and down at the mounting barrel 25 in an adjustable manner; the second cam 231 is limited on the mounting barrel 25 through the second rotating handle 232, and the second cam 231 is positioned at the lower end of the first sleeve 23; the second rotating handle 232 is rotatably connected with the mounting barrel 25, and the second rotating handle 232 rotates to drive the second cam 231 to eccentrically move so that the first sleeve 23 can move up and down at the mounting barrel 25 and be adjusted; the cam III 241 is limited on the mounting barrel 25 through the rotating handle III 242, and the cam III 241 is positioned at the lower end of the sleeve II 24; the third rotating handle 242 is rotatably connected with the mounting barrel 25, and the third rotating handle 242 drives the third cam 241 to eccentrically move so that the second sleeve 24 can move up and down adjustably at the mounting barrel 25. When the device works, the first cam 221 can be rotated by rotating the first rotating handle 222, so that the height of the table core 22 is adjusted, the first sleeve 23 can be adjusted by rotating the second rotating handle 232, and the height of the second sleeve 24 can be adjusted by rotating the second rotating handle 232, so that the end surfaces of the upper ends of the table core 22, the first sleeve 23, the second sleeve 24 and the installation barrel 25 are flush or level, or the end surfaces of the table core 22, the first sleeve 23, the second sleeve 24 and the installation barrel 25 are arranged in a step shape as required; some product bottoms indent for it makes when printing to be in unsettled state, and is inconvenient when carrying out 3D with the 3D printer and print, and the adjustable product that makes these bottoms indent of workstation up end has made things convenient for 3D to print when carrying out 3D and the raw materials has had the attachment point, has improved the printing efficiency of PET plastics 3D printer.

As shown in fig. 1, the melting module 3 includes a heating box 31 and a fixing seat 32, a box cover is disposed on the heating box 31, the heating box 31 is fixed on the machine body 1 through the fixing seat 32, a first heating coil 33 is disposed on the heating box 31, and the first heating coil 33 is used for heating and melting the waste plastic bottle 7 in the heating box 31, so that the melted waste plastic bottle 7 forms a raw material 71 for printing. When the plastic basin printing machine works, the first heating coil 33 is electrified, so that the first heating coil 33 heats the heating box 31, the waste plastic bottles in the heating box 31 are melted into a molten state, the molten waste plastic bottles 7 form raw materials 71 for printing, in the process, pigments can be added into the raw materials 71 and stirred, the color of the raw materials 71 can be changed, and the 3D printed plastic basins 8 are diversified in color.

As shown in fig. 1 and 4, the print head 4 includes a sealed shell 41, a discharge pipe 42 and a temperature-reducing nozzle 43, the discharge pipe 42 is located at the lower end of the sealed shell 41, and the discharge pipe 42 extends into the sealed shell 41; the end of the conveying pipe 6 is connected with a discharge pipe 42; the temperature-reducing spray head 43 is positioned at the upper end part of the discharge pipe 42, and the temperature-reducing spray head 43 sprays water to cool and reduce the temperature of the molten raw material 71 conveyed by the conveying pipe 6, so that a layer of skin is formed on the outer surface of the raw material 71, and the raw material 71 is not adhered to the inner wall of the discharge pipe 42. During operation, the conveying pipe 6 conveys the raw materials 71 to the discharging pipe 42, so that a layer of skin is formed on the outer surface of the raw materials 71, the raw materials 71 are not adhered to the inner wall of the discharging pipe 42, the discharging pipe 42 starts to regularly spray the raw materials 71 on a printing table, and the raw materials 71 are overlapped layer by layer to print the 3D plastic basin 8.

As shown in fig. 1, 4 and 5, the print head 4 is provided with an automatic pressure head 44, and the automatic pressure head 44 penetrates through the sealed shell 41; the automatic pressing head 44 comprises a working cam 441, a pressing rod 442, a return spring and a pressing head 443, wherein the return spring is sleeved on the pressing rod 442, one end of the return spring abuts against the end of the pressing rod 442, and the other end of the return spring abuts against the outer wall of the sealing shell 41; the working cam 441 is positioned at the upper end of the pressure rod 442, and the working raised head rotates to drive the pressure rod 442 to move up and down at the sealing shell 41; the pressure rod 442 penetrates through the sealing shell 41, the interior of the lower half section of the pressure rod 442 is hollow, and the outer surface of the pressure rod 442 is provided with a spiral convex rib; a guide seat 444 is arranged at the joint of the pressure lever 442 and the sealing shell 41, and the pressure lever 442 penetrates through the guide seat 444; the guide seat 444 is provided with a guide hole; a spiral groove is arranged in the guide hole and is matched with the spiral convex rib, so that the pressure rod 442 can rotate while moving up and down in the guide hole; the pressing head 443 is fixed at the lower end of the pressing rod 442, the interior of the pressing head 443 is hollow, cooling water is filled in the pressing head 443, the pressing head 443 is communicated with the lower end of the pressing rod 442, the thorn body 4431 is arranged on the lower end face of the pressing head 443, and a water hole is arranged on the lower end face of the pressing head 443 and is positioned at the edge of the thorn body 4431; a water tank 445 is arranged in the sealed shell 41; the water tank 445 is communicated with the lower half section of the pressure rod 442 through a first arranged pipe. When the discharging pipe 42 is used for laminating the raw material 71 layer, the working cam 441 rotates to drive the pressing rod 442 to move up and down at the sealing shell 41 and keep rotating, the pressing rod 442 drives the pressing head 443 to press the raw material 71 which is laminated layer by layer, and the thorn 4431 on the pressing head 443 punctures the epidermis formed on the surface layer of the raw material 71, so that the upper layer raw material 71 and the lower layer raw material 71 are integrated; meanwhile, the cooling water in the water tank 445 is delivered to the pressing head 443 through the pressing rod 442, so that the cooling water in the pressing head 443 is sufficient, meanwhile, the water in the pressing head 443 flows to the stab body 4431 through the water holes, so that a layer of water is attached to the surface of the stab body 4431, the surface temperature of the stab body 4431 is low, the raw material 71 cannot be adhered to the stab body 4431 after the stab body 4431 punctures the raw material 71 in a molten state, the surface of the stab body 4431 is clean, meanwhile, the surface temperature of the pressing head 443 is low due to the cooling water stored in the pressing head 443, the raw material 71 is prevented from being adhered to the pressing head 443, and the surface cleanness of the pressing head 443 is maintained.

As shown in fig. 1 and 4, one end of the delivery pipe 6 is communicated with the melting module 3, the other end of the delivery pipe 6 is communicated with the printing head 4, a cooling water pipe 61 and a heating coil II 62 are sleeved outside the delivery pipe 6, and a rotary feeding wheel 63 is arranged in the delivery pipe 6; the cooling water pipe 61 is positioned at the joint of the conveying pipe 6 and the melting module 3, and the cooling water pipe 61 is used for cooling the raw material 71 generated by the melting module 3, so that a layer of skin is formed on the outer surface of the raw material 71, and the raw material 71 is not adhered to the inner wall of the conveying pipe 6; the feeding wheels 63 are arranged at two ends of the conveying pipe 6, and the feeding wheels 63 rotate to convey the raw material 71 in the conveying pipe 6, so that the raw material 71 flows from the melting module 3 to the printing head 4; the second heating coil 62 is located at a connection position between the delivery pipe 6 and the print head 4, and the second heating coil 62 is used for heating and melting the raw material 71 which is locally cooled in the delivery pipe 6, so that the raw material 71 delivered out of the delivery pipe 6 is kept in a molten state. In operation, the conveying pipe 6 receives the molten raw material 71 from the lower end of the heating box 31, and the cooling water pipe 61 cools the raw material 71 which just flows from the heating box 31 to the conveying pipe 6, so that the outer surface of the raw material 71 forms a layer of skin, and the raw material 71 is not adhered to the inner wall of the conveying pipe 6; the raw material 71 in the conveying pipe 6 is conveyed to the sealing shell 41 from the heating box 31 under the action of the rotating feeding wheel 63, the raw material 71 enters the discharge pipe 42 from the conveying pipe 6, the temperature of the raw material 71 in the conveying pipe 6 is inevitably greatly reduced when the raw material 71 flows to the other end of the conveying pipe 6 from one end of the conveying pipe 6, and the raw material 71 in the conveying pipe 6 tends to be hardened to influence the printing effect of the printing head 4, so that the heating coil II 62 is arranged at the joint of the conveying pipe 6 and the printing head 4, the heating coil II 62 heats the raw material 71 in the conveying pipe 6, the raw material 71 conveyed out of the conveying pipe 6 is still in a molten state, and the printing effect of the printing head 4 is improved.

As shown in fig. 1 and 4, the squashed module 5 comprises a base 51, a sliding plate 52, a rotating disc 53 and a crank 54, wherein the base 51 is fixed on the machine body 1 through a fastener, and the base 51 comprises a bottom plate 511 and a vertical plate 512; the bottom plate 511 is vertically and fixedly connected with the vertical plate 512 into a whole, and a dovetail groove and an arc groove are formed in the bottom plate 511; the arc groove is positioned at the right upper end of the dovetail groove, and the arc surface of the arc groove is provided with threads; the lower end of the sliding plate 52 is matched with the dovetail groove, the sliding plate 52 is connected with the bottom plate 511 in a sliding manner, and a bearing is fixedly arranged on the sliding plate 52; the turntable 53 is positioned between the sliding plate 52 and the vertical plate 512, the arc surface of the turntable 53 is provided with threads, the turntable 53 is in threaded fit with the arc groove, the center of the turntable 53 is provided with a thimble, and the thimble faces the vertical plate 512; the crank 54 penetrates through the bearing inner ring, the crank 54 is fixedly connected with the bearing inner ring, one end of the crank 54 is welded with the center of the turntable 53 into a whole, and the other end of the crank 54 is a free end which can be shaken by hands. When the heating box works, the waste plastic bottles are placed between the vertical plate 512 and the rotating plate 53, the rotating handle 54 is rotated to enable the rotating plate 53 to rotate, the rotating plate 53 is in threaded connection with the bottom plate 511, the rotating plate 53 is enabled to be continuously close to the vertical plate 512 when rotating, the rotating plate 53 moves to drive the sliding plate 52 to slide on the bottom plate 511, the rotating plate 52 supports the rotating plate 53 through the rotating handle 54 all the time, the rotating handle 54 is continuously rotated to enable the rotating plate 53 to extrude the waste plastic bottles until the waste plastic bottles are flattened, then the rotating handle is rotated reversely, the waste plastic bottles are loosened, the waste plastic bottles are taken out, and the waste plastic bottles are put into.

The specific working process is as follows:

when the heating box works, the waste plastic bottles are placed between the vertical plate 512 and the rotating plate 53, the crank 54 is rotated to enable the rotating plate 53 to rotate, the rotating plate 53 is in threaded connection with the bottom plate 511, the rotating plate 53 is enabled to be continuously close to the vertical plate 512 when rotating, the rotating plate 53 moves to drive the sliding plate 52 to slide on the bottom plate 511, the rotating plate 52 supports the rotating plate 53 through the crank 54 all the time, the crank 54 is continuously shaken to enable the rotating plate 53 to extrude the waste plastic bottles until the waste plastic bottles are flattened, then the crank is rotated reversely, the waste plastic bottles are loosened, taken out and put into the heating box 31; electrifying the first heating coil 33, heating the heating box 31 by the first heating coil 33, melting the waste plastic bottles in the heating box 31 into a molten state, and forming the molten waste plastic bottles 7 into raw materials 71 for printing, wherein in the process, pigment can be added to the raw materials 71 and stirred, the color of the raw materials 71 can be changed, and the 3D printed plastic basins 8 have various colors; meanwhile, the workbench 2 is adjusted, the table core 22, the sleeve I23 and the sleeve II 24 are adjusted according to the size of the plastic basin 8 to be printed and the protruding height of the basin bottom of the plastic basin 8, the cam I221 can be rotated by rotating the rotating handle I222, the height of the table core 22 is adjusted, the sleeve I23 can be adjusted by rotating the rotating handle II 232, the height of the sleeve II 24 can be adjusted by rotating the rotating handle II 232, and the end faces of the upper ends of the table core 22, the sleeve I23, the sleeve II 24 and the installation barrel 25 are enabled to be flush or level or the end faces of the table core 22, the sleeve I23, the sleeve II 24 and the installation barrel 25 are enabled to be arranged in a step shape as required.

After the raw material 71 in the heating box 31 is produced, the conveying pipe 6 receives the molten raw material 71 from the lower end of the heating box 31, and the cooling water pipe 61 cools the raw material 71 which just flows from the heating box 31 to the conveying pipe 6, so that the outer surface of the raw material 71 forms a layer of skin and the raw material 71 does not adhere to the inner wall of the conveying pipe 6; the raw material 71 in the conveying pipe 6 is conveyed from the heating box 31 to the sealing shell 41 under the action of the rotating feeding wheel 63, the raw material 71 enters the discharge pipe 42 from the conveying pipe 6, the temperature of the raw material 71 in the conveying pipe 6 is inevitably greatly reduced when the raw material 71 flows from one end of the conveying pipe 6 to the other end of the conveying pipe 6, and the raw material 71 in the conveying pipe 6 tends to be hardened to influence the printing effect of the printing head 4, so that the heating coil II 62 is arranged at the joint of the conveying pipe 6 and the printing head 4, the heating coil II 62 heats the raw material 71 in the conveying pipe 6, the raw material 71 conveyed out of the conveying pipe 6 is still in a molten state, and the printing effect of the printing head 4 is improved; the conveying pipe 6 conveys the raw material 71 to the discharging pipe 42, so that a layer of skin is formed on the outer surface of the raw material 71, the raw material 71 is not adhered to the inner wall of the discharging pipe 42, the discharging pipe 42 starts to regularly spray the raw material 71 on a printing table, and the raw material 71 is overlaid layer by layer to print a 3D plastic basin 8; when the discharging pipe 42 is used for laminating the raw material 71, the working cam 441 rotates to drive the pressing rod 442 to move up and down at the sealing shell 41 and keep rotating, the pressing rod 442 drives the pressing head 443 to press the raw material 71 laminated layer by layer, and the thorn 4431 on the pressing head 443 punctures the skin formed on the surface layer of the raw material 71, so that the upper layer raw material 71 and the lower layer raw material 71 are fused into a whole; meanwhile, cooling water in the water tank 445 is conveyed to the pressing head 443 through the pressure rod 442, so that sufficient cooling water is cooled in the pressing head 443, meanwhile, the water in the pressing head 443 flows to the stab body 4431 through the water holes, so that a layer of water is attached to the surface of the stab body 4431, the surface temperature of the stab body 4431 is low, the raw material 71 cannot be adhered to the stab body 4431 after the stab body 4431 punctures the raw material 71 in a molten state, the surface of the stab body 4431 is clean, meanwhile, the surface temperature of the pressing head 443 is low due to the cooling water stored in the pressing head 443, the raw material 71 is prevented from being adhered to the pressing head 443, and the surface cleanness of the pressing head 443 is kept; when the printing head 4 prints the plastic basin 8 completely, the first motor 14 drives the sliding seat 12 to move upwards, so that the printing head 4 moves upwards and retracts.

(A) In the above embodiment, the working table forms the upper end surface of the working table through the table core, the first sleeve, the second sleeve and the mounting barrel, but the working table is not limited to this, and the working table may also be directly a circular flat plate.

(B) In the above embodiment, the waste plastic bottle is melted by the heating coil, but the present invention is not limited thereto, and the plastic bottle may be directly heated and melted by the heating rod.

Industrial applicability

According to the invention, the plastic pots with concave bottoms, different shapes and high quality can be quickly produced by using the waste plastic bottles, waste resources are recycled, the environmental pollution of the waste resources is reduced, and meanwhile, the problem that the plastic pots with concave bottoms are difficult to print is solved; therefore, the PET plastic 3D printer is useful in the technical field of 3D printing.

Claims

1. The utility model provides a PET plastics 3D printer, includes organism (1), workstation (2), melting module (3), beats printer head (4) and flattens module (5), workstation (2) are located one side of organism (1), and workstation (2) are for beating printer head (4) operating position, and workstation (2) drive through driving motor (21) that set up on organism (1) and rotate its characterized in that: the melting module (3) is fixed on the other side of the machine body (1), and the melting module (3) is used for melting the waste plastic bottles (7) and liquefying the waste plastic bottles (7) into raw materials (71) for printing; the flattening module (5) is fixed on the machine body (1), the flattening module (5) is positioned below the melting module (3), and the flattening module (5) is used for flattening the waste plastic bottles (7); the machine body (1) comprises a support (11), support legs, a sliding seat (12), a first screw rod (13) and a first motor (14), wherein the support (11) is supported on the ground through the support legs; the sliding seat (12) is connected with the support (11) in a sliding manner, and a first support, a second screw rod (121) and a second motor are arranged on the lower end face of the sliding seat (12); the second screw rod (121) is limited on the sliding seat (12) through the first bracket; the second motor is fixed on the first bracket and used for driving the second screw rod (121) to rotate; a first screw rod (13) and a first motor (14) are arranged on the support (11), and the first screw rod (13) penetrates through the sliding seat (12); the first motor (14) is used for driving the first screw rod (13) to drive the sliding seat (12) to slide back and forth on the support (11); the printing head (4) is positioned on the second screw rod (121), the printing head (4) horizontally moves back and forth on the sliding seat (12) along with the rotation of the second screw rod (121), a conveying pipe (6) is arranged between the printing head (4) and the melting module, and the printing head (4) is communicated with the melting module through the conveying pipe (6);

the workbench (2) comprises a workbench core (22), a first cam (221), a first rotating handle (222), a first sleeve (23), a second cam (231), a second rotating handle (232), a second sleeve (24), a third cam (241), a third rotating handle (242) and an installation barrel (25), wherein the first sleeve (23) is sleeved on the outer side of the workbench core (22), and the inner wall of the first sleeve (23) is matched with the outer wall of the workbench core (22); the second sleeve (24) is sleeved outside the first sleeve (23), and the inner wall of the second sleeve (24) is matched with the outer wall of the first sleeve (23); the mounting barrel (25) is sleeved on the outer side of the second sleeve (24), and the inner wall of the mounting barrel (25) is matched with the outer wall of the second sleeve (24); the first cam (221) is limited on the mounting barrel (25) through the first rotating handle (222), and the first cam (221) is positioned at the lower end of the table core (22); the first rotating handle (222) is rotatably connected with the mounting barrel (25), and the first rotating handle (222) rotates to drive the first cam (221) to eccentrically move so that the table core (22) can move up and down at the mounting barrel (25) and is adjustable; the second cam (231) is limited on the mounting barrel (25) through a second rotating handle (232), and the second cam (231) is positioned at the lower end of the first sleeve (23); the second rotating handle (232) is rotatably connected with the mounting barrel (25), and the second rotating handle (232) rotates to drive the second cam (231) to eccentrically move so that the first sleeve (23) can move up and down at the mounting barrel (25) and is adjustable; the cam III (241) is limited on the mounting barrel (25) through the rotating handle III (242), and the cam III (241) is positioned at the lower end of the sleeve II (24); the third rotating handle (242) is rotatably connected with the mounting barrel (25), and the third rotating handle (242) rotates to drive the third cam (241) to eccentrically move so that the second sleeve (24) can move up and down at the mounting barrel (25) and is adjustable;

the melting module (3) comprises a heating box (31) and a fixed seat (32), a box cover is arranged on the heating box (31), the heating box (31) is fixed on the machine body (1) through the fixed seat (32), a first heating coil (33) is arranged on the heating box (31), and the first heating coil (33) is used for heating and melting the waste plastic bottles (7) in the heating box (31), so that the melted waste plastic bottles (7) form raw materials (71) for printing;

the printing head (4) comprises a sealing shell (41), a discharge pipe (42) and a cooling spray head (43), wherein the discharge pipe (42) is positioned at the lower end of the sealing shell (41), and the discharge pipe (42) extends into the sealing shell (41); the cooling spray head (43) is positioned at the upper end part of the discharge pipe (42), and the cooling spray head (43) sprays water to cool the molten raw material (71) so as to form a layer of skin on the outer surface of the raw material (71) and make the raw material (71) not adhered to the inner wall of the discharge pipe (42);

one end of the conveying pipe (6) is communicated with the melting module (3), the other end of the conveying pipe (6) is communicated with the printing head (4), a cooling water pipe (61) and a heating coil II (62) are sleeved outside the conveying pipe (6), and a rotary feeding wheel (63) is arranged in the conveying pipe (6); the cooling water pipe (61) is positioned at the joint of the conveying pipe (6) and the melting module (3), and the cooling water pipe (61) is used for cooling the raw material (71) generated by the melting module (3) so that the outer surface of the raw material (71) forms a layer of skin and the raw material (71) is not adhered to the inner wall of the conveying pipe (6); the feeding wheels (63) are arranged at two ends of the conveying pipe (6), and the feeding wheels (63) rotate to convey the raw materials (71) in the conveying pipe (6) so that the raw materials (71) flow from the melting module (3) to the printing head (4); the second heating coil (62) is positioned at the joint of the conveying pipe (6) and the printing head (4), and the second heating coil (62) is used for heating and melting the locally cooled raw material (71) in the conveying pipe (6) so as to keep the raw material (71) conveyed out of the conveying pipe (6) in a molten state;

the flattening module (5) comprises a base (51), a sliding plate (52), a rotary disc (53) and a crank (54), the base (51) is fixed on the machine body (1) through a fastener, and the base (51) comprises a bottom plate (511) and a vertical plate (512); the bottom plate (511) is vertically and fixedly connected with the vertical plate (512) into a whole, and a dovetail groove and an arc groove are formed in the bottom plate (511); the arc groove is positioned at the right upper end of the dovetail groove, and the arc surface of the arc groove is provided with threads; the lower end of the sliding plate (52) is matched with the dovetail groove, the sliding plate (52) is connected with the bottom plate (511) in a sliding mode, and a bearing is fixedly arranged on the sliding plate (52); the rotary table (53) is positioned between the sliding plate (52) and the vertical plate (512), the arc surface of the rotary table (53) is provided with threads, the rotary table (53) is in threaded fit with the arc groove, the center of the rotary table (53) is provided with a thimble, and the thimble faces the vertical plate (512); the crank (54) penetrates through the bearing inner ring, the crank (54) is fixedly connected with the bearing inner ring, one end of the crank (54) is welded with the center of the turntable (53) into a whole, and the other end of the crank (54) is a free end for hand-held shaking.

2. The PET plastic 3D printer of claim 1, wherein: an automatic pressure head (44) is arranged on the printing head (4), and the automatic pressure head (44) penetrates through the sealing shell (41); the automatic pressure head (44) comprises a working cam (441), a pressure rod (442), a return spring and a pressing head (443), the return spring is sleeved on the pressure rod (442), one end of the return spring abuts against the end part of the pressure rod (442), and the other end of the return spring abuts against the outer wall of the sealing shell (41); the working cam (441) is positioned at the upper end of the pressure rod (442), and the working raised head rotates to drive the pressure rod (442) to move up and down at the sealing shell (41); the compression rod (442) penetrates through the sealing shell (41), the interior of the lower half section of the compression rod (442) is hollow, and the outer surface of the compression rod (442) is provided with a spiral convex rib; a guide seat (444) is arranged at the joint of the pressure rod (442) and the sealing shell (41), and the pressure rod (442) penetrates through the guide seat (444); the guide seat (444) is provided with a guide hole; a spiral groove is arranged in the guide hole and is matched with the spiral convex rib, so that the pressure rod (442) can rotate while moving up and down in the guide hole; the pressing head (443) is fixed at the lower end of the pressing rod (442), the inside of the pressing head (443) is hollow, cooling water is filled in the pressing head (443), the pressing head (443) is communicated with the lower end of the pressing rod (442), the lower end face of the pressing head (443) is provided with a thorn body (4431), the lower end face of the pressing head (443) is provided with a water hole, and the water hole is positioned at the edge of the thorn body (4431); a water tank (445) is arranged in the sealed shell (41); the water tank (445) is communicated with the lower half section of the pressure rod (442) through a first arranged pipe.